Home / 28,319.03-39,080.40-15,573.03

Finding the Fourth Proportional to 28,319.03, 39,080.40 and 15,573.03

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Solution

The fourth proportional to 28,319.03, 39,080.40 and 15,573.03 is: 21,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.03 : 39,080.40 = 15,573.03 : x
  2. Step 2: Convert to fraction form
    28,319.03/39,080.40 = 15,573.03/x
  3. Step 3: Cross multiply
    28,319.03x = 39,080.40 × 15,573.03
  4. Step 4: Simplify right side
    28,319.03x = 608,600,241.61
  5. Step 5: Solve for x
    x = 608,600,241.61/28,319.03
  6. Step 6: Final answer
    x = 21,490.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.